Nondestructive Phase Shifting Imaging on Cold Rubidium Atoms

• Main Authors: Ying-Hsiang-Wang, 王盈翔
• Other Authors: Dian-Jun Han
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/39926524702802776575

碩士 === 國立中正大學 === 物理學系暨研究所 === 103 === We experimentally demonstrate the lens-free nondestructive phase shifting imaging on 87Rb magneto-optical trap (MOT) by using a Gaussian beam and accompanying with phase shifting interferometry . This scheme requires no imaging lens. Hence, aberration associated with it is completely eliminated and mechanical focusing can be avoided. Compared to the common single-beam nondestructive means , our proposed scheme allows energy per probe pulse delivered to the cold samples lowered by almost three orders of magnitude due to signal enhancement inherently provided in the two- beam configuration .Our experimental realization of this novel nondestructive detection means for in-situ imaging on the rubidium-87 atoms trapped in a MOT. Besides, we will demonstrate the focusing capability provided in this scheme as well, though no imaging lens is used.